Fluidized bed powder coating is a powder coating iyo inoshandiswa ne fluidized bed system apo zvidimbu zvehupfu zvakatsetseka zvinorembera mumhepo, uye chikamu chinopisa chinonyudzwa mutangi yehupfu. Zvimedu zvakanyunguduka zvinosanganiswa kuchinhu, zvichipa kuenderana, kunyange kupera pazvikamu zvesimbi. Iyi nzira inonyatsokodzera sejasi rinoshanda kuti ripe abrasion, corrosion, uye chemical resistance. Yakajairika ukobvu hweiyi nzira ndeye 200-2000μm ukobvu, asi huremu hwakakora hunogona kuwanikwa.

Icho chikamu chiri upfu chakaputirwa ne fluidized bed coating chinoenda kuburikidza inotevera steps.

1.Preheat

Chikamu chesimbi chinofanira kupiswa muovheni kusvika 220-400 ℃. Iyi tembiricha yakakwira kupfuura nzvimbo yekunyungudika yehupfu hwemubhedha, uye ita kuti hupfu hunodzima kana kutonhora chikamu ipapo ipapo.

2. Kunyudza

Mufuridziro wemhepo uri pasi petangi rehupfu unofuridzira zvidimbu zvehupfu kuita semvura. Isu tinonyudza chikamu chinopisa mumubhedha wakasvibiswa wehupfu hwehupfu uye unofamba uchitenderera kuti urambe uchiputira. Ukobvu hwekupedzisira hweworkpiece depends pakupisa kwenhengo isati yanyikwa mutangi uye kuti inogara kwenguva yakareba sei mumubhedha wemvura wepoda.

4.Post-kupisa kurapa

Nhanho yekupedzisira yemvura yemubhedha poda yekuputira ndiyo yekupedzisira kusanganisa maitiro. Mushure mekunge hupfu yakawandisa yadonha kubva pachigadzirwa, inoenda kuchoto pane yakaderera tembiricha kuti irapwe. Iko-kupisa kwemashure kunofanira kunge kune kutonhora kwakadzika kudarika kwevheni yakatsva. Chinangwa chedanho iri ndechekuita chokwadi chekuti hupfu hwese hwakanamatira kune chikamu panguva yekunyura uye inonyungudika kuita yakatsetseka, yunifomu yekupfeka.

5.Kutonhorera

Iye zvino fambisa iyo yakavharwa workpiece kubva muchoto uye itonhodze nemhepo feni kana mhepo chaiyo.

Fluidized bed poda coating inosanganisira kunyudza rinopisa workpiece mutangi reupfu, richibvumira hupfu hunyunguduke pachikamu uye kuvaka firimu, uye zvichizopa nguva yakakwana uye kupisa kuti firimu iri riyerere richipinda mujira risingaperi. Iyo workpiece inofanirwa kunyudzwa mumubhedha wakanyungudutswa nekukurumidza sezvinobvira mushure mekuibvisa kubva muchoto chepreheat kuchengetedza kupisa kurasikirwa zvishoma. Kutenderera kwenguva kunofanirwa kuumbwa kuti nguva iyi irambe iripo. Paunenge uri muhupfu, workpiece inofanira kuchengetwa mukufamba kuti upfu hufambe pamusoro pechikamu chinopisa. Mhedzisiro yechimwe chikamu depends pakugadzirisa kwayo.

Kufamba kusina kunaka kana kusakwana kunogona kukonzera matambudziko akati wandei: mapiniko, kunyanya nechepasi penzvimbo dzakati sandara dzakati sandarara uye pamharadzano dzewaya: kutaridzika kweganda reorenji; uye kusavharika kwakakwana kwemakona kana mitswe. Kufamba kwakashata zvakare kunogona kutungamirira kune nonnuniform coating ukobvu, senge oval coating pawaya dzakatenderera. Nguva yakajairika yekunyudzwa muhupfu yakanyungudutswa ndeye masekonzi matatu kusvika makumi maviri.

Yakawandisa poda inofanira kubviswa pakarepo mushure mekuputira kudzivirira kuwanda kwakawanda. Izvi zvinogona kuitwa nekuputika kwemhepo kubva kune yakadzorwa mhepo jet, kurova kana kuzunguza chikamu, kana kuitetemesa kuti irase iyo yakawandisa. Kana iyo yakawandisa poda isina kusvibiswa nehumwe hupfu kana tsvina, inogona kushandiswa zvakare. Kana chikamu chacho chiine kupisa kwakakwana kwakasara, kuvhara kunogona kuyerera kunze kune mazinga anogamuchirwa pasina kupisa kwemashure. Pazvikamu zvakatetepa, kana zvikamu zvinopisa kupisa, posvo inopisa inogona kudiwa.